I've had fully hairy and I was not crazy about it... It makes it waaaaay less appealing to suck a guy's balls if you have to stop every 5 seconds to pick pubes out of your teeth.
My current boyfriend trims the top and shaves his balls and I think he couldn't be sexier. I actually *want* to put his balls in my mouth now! But it's really a matter of personal taste.
If you want to try going bare, by all means give it a go! I wouldn't recommend a wax for the first time though, unless you have a relatively high pain threshold. Mine's super high, and it still hurt like hell the first time!
"You will always be loved, and you will always be in love with love... Don't be afraid. There are exquisite things in store for you. This is merely the beginning." - The Picture of Dorian Gray - Oscar Wilde.